text: Hahn and Meitner made use of Strassmann's expertise in analytical chemistry in their investigations of the products resulting from bombarding uranium with neutrons. Of these three scientists, only Strassmann was able to remain focused on their joint experimental investigations. Meitner, being Jewish, was forced to leave Nazi Germany, and Hahn had extensive administrative duties. 
  In 1937 and 1938, scientists Irène Joliot-Curie and Paul Savič reported results from their investigations on irradiating uranium with neutrons. They were unable to identify the substances that formed as a result of the uranium irradiation. Strassmann, with Hahn, was able to identify the element barium as a major end product in the neutron bombardment of uranium, through a decay chain. The result was surprising because of the large difference in atomic number of the two elements, uranium having atomic number 92 and barium having atomic number 56.
  In December 1938, Hahn and Strassmann sent a manuscript to Naturwissenschaften reporting the results of their experiments on detection of barium as a product of neutron bombardment of uranium Otto Frisch confirmed Strassman and Hahns report experimentally on 13 January 1939. Frisch and Meitner explained Strassmans and Hahn's findings as being from nuclear fission.
  In 1944, Hahn received the Nobel Prize for Chemistry for the discovery of nuclear fission, although Fritz Strassmann had been acknowledged as an equal collaborator in the discovery.
  From 1939 to 1946 working at the Kaiser-Wilhelm Institute, Strassman contributed to research on the fission products of thorium, uranium, and neptunium. In this way, he contributed to the understanding of the radiochemistry of the actinide elements.
  Strassmann developed methods for the dating of the age of minerals and other inorganic substances based on the half-life of radioactive elements and the enrichment of decay products. Strassmann and Ernst Walling developed the rubidium-strontium method of radiometric dating in 1936 and 1937, and Strassmann continued this work in 1942 and 1943. His methods are known as emanation methods, and Strassmann's research in this area was fundamental to the field of geochronology.
  On 15 February 1944 and again on 24 March 1944, as part of the Bombing of Berlin in World War II, the Institute suffered severe bombing damage. For this reason, the institute was temporarily relocated to Tailfingen (now Albstadt) in the Württemberg district, in a textile factory belonging to the Ludwig Haasis company.
  In April 1945, Hahn and other German physicists were taken into custody as part of Operation Epsilon and interned at Farm Hall, Godmanchester, near Cambridge, England. In Hahn's absence, Strassmann became director  of the chemistry section of the institute.
  In 1946 Strassmann became professor of inorganic chemistry and nuclear chemistry at the University of Mainz.